Clutch.



W0. 66l,479. Patented Nov. l3, I900.

H. L. ARNULI]. v

CLUTCH.

(Application filed Feb. 21, 1900. (No Model.) 3 Sheets-Sheet 1.

Patented Nov. I3, 1900. H. L. ARNOLD.

B L U T C H (Application filed Feb. 21, 1900.)

3 Sheets-Sheet 2.

(No Model.)

(No Model.)

H. L, ARNOLD.

CLU TCH.

(Applicafion filed Feb, 21, 1900.

Patented Nov. l3, I900.

3 Sheets-Sheet 3..

rrr: Stan HORACE L. ARNOLD, on NEW YORK, N. v, Assumon 'ro'JonN A'. HILL, or sAMu rmon.

C L U T H $PEGIFICATION forming part of Letters Patent No. 661.479, dated November 13, 1900. Application filed- February 21, 1900. Serial No. 6.008. No model.)

To all whom it may concern:

Be it known that I, HORACE L. ARNOLD, a citizen of the United States, residing in New York, (Brooklyn,) in the county of Kings and State of New York, havein vented certain new.

and useful Improvements in Clutches, of which the following is a specification.

This invention relates to clutches, and has for one object improvements in such devices whereby theyare rendered more positive and eifective in operation and whereby when damaged the parts may bereadily removed for repairs.

A further object of the invention is the provision of a friction-clutch in which'the frictional engagement of the parts is caused by the expansion ofa divided ring disposed between the power-transmitter and a part carried by the shaft to be driven.

Further objects of the invention are the provision of improved instrumentalities for" setting and releasing the clutch and of improved means for actuating said instrumentalities.

Referring to the accompanying drawings, Figure 1 represents a longitudinal vertical section of my invention, showing it applied toa common form of mechanism. Fig.2 represents a plan view of the mechanism illustrated in Fig. 1. Fig. 3 is a detail, partially in section, showing the divided ring and toggles fitted in sockets thereof and serviug,when actuated,'to expand the same. Fig. 4. is a perspective View of the clutch-adjusting rod, the conical sleeve thereof being detached. Fig. 5 is a perspective view of the sleeve or spindle by which the clutch-adjusting rod is carried. Fig. (3 is a sectional detail on line a: as, Fig. 5. Fig. 7 isa perspeetiverepresentation of the hollow cylinder and chambered head in which the parts illustrated in Figs. 4. and 5 are assembled, as shown in Fig. 1. Fig. 8 is a side view of a cap for said head. Fig. 9 is a perspective view of a plug having a conical tip and adapted to be secured i a threaded opening located at one end of 1e sleeve represented in Fig. 5.

Like characters designate similar parts in the diiferent figures.

Referring to the drawings, the numeral 1t) designates in a general way any conventional form of framework and gearing with which my invention may be employed, and this framework, as shown, consists of a standard 11, having two cylindrical portions 12 and 13, one being located at an angle to the other, connected by a reinforcing rib or projection 14, preferably formed integral with said parts, as shown in Figs. 1 and 2.

Mounted in cylinder 13 of the frame is'a shaft 15, carrying a pulley 16 and a worm 17, and journaled in bearings of the part 12 is a hollow cylinder 18, having a eham bered head 18 and carrying at its rear end a suitable gear-wheel 19, which intermeshes with a gear 20 on a shaft 21, mounted in a bearing 22 of the standard 11 of the framework.

Sleeve 18 is equipped intermediate its length with ball-raceways 23 for receiving a series of rollers or the framework is fitted on its under side with companion raceways 25. (See Fig. l.)

Projecting from the head 18 is a circular flange l8 outer end and provided at intervals around its circumference with a series of openings 18 for a purpose hereinafter described. Located within this circular flange or projection 18 and surrounding the same is a di vided ring 25, having a series of sockets 25, disposed at intervals around its inner wall.

Within the cylinder 18 is a sleeve or hollow spindle 20,11avinga chambered head 26,closod by a screw-cap 27, carrying a hardened plug or projection 28, having a conical tip 28, and. mounted within said sleeve for movement therewith is a rod 20, having a reduced end 29, to which a hardened cone-shaped sleeve 30 is removably fitted, said sleeve being held on said rod by a nut 31 engaging a screw thread thereon, and at its opposite end said rod is provided with a threaded surface 21*, with which a nut 32 engages for securing the rod in position within thesleeve and for adjusting the same to'change the position of the cone with respect to the toggles hereinafter described.

Fitted in the hollow cylinder or sleeve 18 is a coiled spring 33, which bears at one end against a shoulder of said sleeveand at balls24, and the cylinder 12 of shown screw-threaded at lSiatitsthe other end against a shoulder .on the hollow spindle 26, carried by said sleeve.

Fitted in sockets 26 of the head 26"0f hollow spindle 26 are toggles'70 of substantially dumb-bell shape, having rounded heads,which bear against the conical sleeve 30 of rod 29. The opposite ends of these toggles project throughv the openings 18 in' head 18' and; engage with the sockets 25 in the divided' i-ing 25, as shown in Figs; 1 and'3'. Pivoted to an arui ll', projecting from the frame 11, is a lever 3,4;having asocket 35 for receiving a ball-bearing 36, the balls of which engage with the conical tip 28' of plug 28, carried bythe cap 27, secured to the head of the spindle 26. At itslower end lever 34 is pivoted to the frame at 37 and is equipped with a projection 37, fitted between stops 38, for limiting the movement of said lever.

Worm-gear 17 is mounted over the divided ring on flange 18 and both the gear and ring are secured in position on the headby the screw-cap 18 As will be observed,the hardened steel cone 26, is detachably secured to the reduced end of rod 29, and it may therefore be readily removed in .case of wear and another replaced on the end of said rod. I

My improved clutch operates as follows: When thrown to the position represented in Fig. 1, lever 34 forces backward the sleeve or spindle 26 against the stress of spring 33, and

said sleeve as it is reciprocated carries with it'the rod 29 and cone 30 and causes the toggle connections to expand the divided ring 25, and thus lock gear 17'to the head 18,and when in this position the gearing connected with the parts just described will of course be operated and shaft 21 will be driven. As the sleeve 18 and its connected parts rotate friction is reduced to a minimum by the ballbearings between said sleeve and the frame and by the ball-bearing in lever 34, which cooperates with the hardened conical plug carried by the head of sleeve or spindle 26. When it is desired to free the clutch, areverse action of lever 34 permits the spring 33 to act and cause the toggles'to rock, thereby releasing the clutch, and when in this position power applied to the shaft 15 will not rotate the parts with which it is connected.

My invention is not limited to the exact details of mechanism shown and described, and, as above stated, the gearing illustrated is purely conventional, for the clutch may be employed to connect and drive a pulley,- a gear of other, kind from that shown, or any sort ofmechanism for which it is adapted. Having described my invention, I claim- 1. A friction-clutch comprising a sleeve or hollow cylinder having a chambered head; a divided ring carried by said head; a member carried by and adapted to be locked to the I head, a series of toggles mounted in sockets of said head and adapted to engage said ring to expand the same and lock said member to the head; a spindle mounted within said cylthe flange 18 ofinder and having a series of openings to receive the ends of said toggles; and means for reciprocating said spindle. 2. A friction-clutch comprising a hollow spindle having a chambered head; a divided ring carried by said-head; a series of toggles mounted in the chamber of said head and adapted to expand the ring; a device carried by the head and adapted to be locked thereto when said ring is expanded; a device for adjusting the toggles; and means for actuating said toggles.

3. Afriction-clutch comprising a head having a flange provided with a series of openings; a divided ring mounted on said flange and having a series of sockets; toggles having heads entering the openings of the flange and the sockets of the ring; a device mounted over the ring and adapted to be secured to the head when said ring is expanded; and means for operating the toggles.

4:. A friction-clutch comprising a head hav ing a hollow extension; a divided ring fitted over a flange of the head; a device within which said ring is mounted; a cap for closing the end of the head and securing said ring and device in position; a hollow spindle within the extension of the head and springactuated' in one direction; a rod having a cone fitted within a chamber of the spindle; a series of toggles for expanding the divided ring; and means for reciprocating the spindle and thereby actuating the toggles.

5. A friction-clutch comprising a head; a divided ring mounted thereon and adapted when expanded to lock the device to be driven to said head; a series of toggles having rounded ends; a reciprocatory spindle carried by an extension of the head and adapted to actuate the toggles; a rod adjustably mounted in said spindle and carrying a cone eugagingwith said toggles; and means for adjusting said rod 6. The combinatidn, with framework having ball-raceways, of a hollowcylinder also carrying ball raceways; a series of balls placed between said raceways; a chambered head projecting from said hollow cylinder and having flanges; a divided ring supported between said flanges; a-series of toggles; a device to be driven mounted over said ring;

a spindle having a chambered head mounted in said cylinder; a spring surrounding said spindle; an adjustable rod carried by the spindle; a cone removably attached to the end of said rod; a capfor closing the chambered end of said spindle, said cap carrying a hardened conical plug; and a lever having a ball-bearing into which said plug is received, said lever serving to actuate said spindle and thereby the toggles to set the clutch.

7 In a clutch, the combinatlon, with ahol low cylinder carrying a flanged and chambered head, the flange of said head being perforated at intervals around its circumference, of a divided ring having a series of sockets,

said ring being mounted between the flanges of said head; a spindle carried by said cylinder and having a chambered head perforated at intervals around-its circumference; a series of toggles with rounded ends received in the perforations of said flange and the head of said spindle; a rod carrying a cone mounted within the spindle; a spiral spring surrounding the spindle and serving to actuate the same in one direction; a cap for said spindle, carrying a plug with a hardened conical tip; apivoted leverhavingarecess; and

a ball-bearing seated in said recess and bearing against the tip of said plug.

8. A friction-clutch comprising a cylinder having a portion providcdwith a series of openings; an expansible ring carried by said portion of the cylinder. and having a series of sockets; toggles having heads entering the openings of the cylinder and the sockets of the ring; a device movably mounted over the ring and adapted to be secured to the cylinder when said ring is expanded; and means for operating the toggles;

HORACE L. ARNOLD;

Witnesses:

FRED. J. Donn, WM. H. BLODGETT. 

